Sankaran, P. M.; Malamel, J. J.; Joseph, M. M.; Sebastian, P. A. Theridion echinatum Gao & Li, 2014, a Junior Synonym of Theridion zonulatum Thorell, 1890 (Araneae, Theridiidae) With Comments on Its Web Architecture. Zootaxa 2015, 4007, 138–142.